Maintaining and Twining the Submerged Engines
* Engines maintaining and twining 4
* Engines maintaining and twining 6
* Engines maintaining and twining 8
* Submerged engines twining from 3 horses to 250 horses
Maintaining the Submerged Airscrews
* Changing the airscrew’s pole
*Substituting the damaged parts
* Cleaning the airscrews from inside
* Adjusting the airscrews’ balance
Maintaining the Water Pumps
* Twining all the types of the water pumps
* Changing the damaged parts
* Cleaning and maintaining the pumps from inside